I'm trying to mount a rebuilt york compressor in my '77 244 with a B21, but I'm confused about the bolts/studs. I have the green and white factory manual, but it doesn't have much detail about mounting it. I have the combined power steering/compressor mount. My confusion is in how to mount the power steering/AC bracket that holds the compressor to the heavy iron plate that is attached to the engine. There are four studs and four holes in the compressor. 3 of those studs match up to non-threaded holes in the iron plate, so I would put a nut on the other end. But one matches up to a threaded hole in the iron plate. How would that work. Thanks for any info.